IC Realtime 4/8 All Channel 720P Mini 1U HD-AVS DVR User Manual

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 TCP port: Default value is 37777. You can change if necessary.
 UDP port: Default value is 37778. You can change if necessary.
 HTTP port: Default value is 80.
 HTTPS port: Default value is 443.
 RTSP port: Default value is 554.

Important: System needs to reboot after you changed and saved any setup of the above four

ports. Please make sure the port values here do not conflict.
 Max connection: system support maximal 128 users. 0 means there is no connection limit.
 MTU: It is to set MTU value of the network adapter. The value ranges from 1280-7200 bytes. The

default setup is 1500 bytes. Please note MTU modification may result in network adapter reboot and

network becomes off. That is to say, MTU modification can affect current network service. System

may pop up dialog box for you to confirm setup when you want to change MTU setup. C lick OK

button to confirm current reboot, or you can click Cancel button to terminate current modification.

Before the modification, you can check the MTU of the gateway; the MTU of the DVR shall be the

same as or is lower than the MTU of the gateway. In this way, you can reduce packets and enhance

network transmission efficiency.

The following MTU value is for reference only.

 1500: Ethernet information packet max value and it is also the default value. It is the typical

setup when there is no PPPoE or VPN. It is the default setup of some router, switch or the

network adapter.

 1492: Recommend value for PPPoE.
 1468: Recommend value for DHCP.

 Preferred DNS server: DNS server IP address.
 Alternate DNS server: DNS server alternate address.
 Transfer mode: Here you can select the priority between fluency/video qualities.
 LAN download: System can process the downloaded data first if you enable this function. The

download speed is 1.5X or 2.0X of the normal speed.

Important

For the IP address of IPv6 version, default gateway, preferred DNS and alternate DNS, the input

value shall be 128-digit. It shall not be left in blank.

After completing all the setups please click save button, system goes back to the previous menu.